To better understand the exchange of groundwater and surface water, we coupled groundwater monitoring at the stream bank with nearby gages in the stream. Describes the procedure and results from several areas.

Proposed removal of dams will change the characteristics of stream flow and will affect fish that swim upstream to spawn. A mathematical model of the river flow tells us where the likely problems will be located and how the flow will change.

Information from climate model forecasts, projections of future flows, paleoclimatic indicators, timing of snowmelt, airborne dust, and the effects on vegetation of troublesome pest species indicate the nature and severity of problems looming.

Site to locate most recent or archive reports for end-of-the-month hydrologic conditions with descriptions, data, charts, and maps giving an overview of water conditions during the month for the state of New York.

Links to model documentation, search engine, and help for (FEQ) Full Equations (a computer model for one-dimensional unsteady flow in open channels and through control structures), and the Full Equations Utilities package (FEQUTL).

The groundwater component of streamflow is important because it is indicative of the sustained flow of a stream during dry periods, is often of better quality, and has a smaller range of temperatures, than surface contributions to streamflow.

The Hydro-Climatic Data Network, or HCDN, consists of streamflow records for 1,659 sites throughout United States and its Territories. Records span the period 1874 through 1988, and represent a total of 73,231 water years of information.

Links by map location or station number to real-time stage and streamflow, real-time water quality, ground-water data, long-term hydrographs, and annual water-data reports to view and download for past and current water conditions in North Dakota.

Brief descriptions of research programs in water resources in Kentucky with a few links to program websites. Programs include data collection projects, acid mine drainage, hydrodynamics, geology, waste site cleanup and hydrogeology.

Water from this reservoir will be used more extensively by the city, so we are developing methods of assessing the water quality in real time by measuring characteristics of stream flow that correlate with important water quality data.

Description of the North Dakota stream-gaging program using a Missouri River streamflow-gaging station in Bismarck, North Dakota as an example explaining how and why the USGS collects stream data with photos and directions for visiting the station.

National Streamflow Information Program home page describing the operation and maintenance of 7000 streamgages, overview of the program, system for collection of streamflow data, maintaining of historic streamflow data, and available reports.

NWISWeb homepage for the National Water Information System providing access to water-resources data collected at approximately 1.5 million sites in all 50 States, the District of Columbia, and Puerto Rico.

Data warehouse for national water quality program with links to chemical, biological, and physical data for water, sediment and animal tissues, nutrient, pesticide, and VOC levels, streamflow, and ground water levels from national study units.

Field manual (also available in PDF and paper formats) with instructions on techniques to collect and process water samples and to perform measurements of temperature, oxygen content, conductance, pH, turbidity, and fecal contaminants.

Historical maps and animations of maps for monthly and annual streamflow conditions by water year showing generalized contour patterns of streamflow conditions. Maps are for the United States, Canada, and Puerto Rico.

Sediment from rivers has both beneficial and detrimental effects on ecosystems and human activities around Puget Sound. We explain where the sediment comes from, how it is transported, and the nature of the data that we can use to understand it.

Report on the hypothesis that variations of the total solar irradiance reaching the Earth and its atmosphere affect the precipitation and runoff of the western U.S. Includes links to research papers, bibliography, and climatic data.

Description and history of the stream-gaging program of the USGS with information on the networks and monitoring stations, data-collection process, uses of streamflow data, and evaluation of the program.

A broad survey of regional patterns in stream flow nationwide. Maps and graphs summarizing streamflow conditions for water-year 2007 (October 1, 2006 to September 30, 2007) in the context of the 78-year period 1930-2007.

A broad survey of regional patterns in stream flow nationwide. Maps and graphs summarizing streamflow conditions for water-year 0810 (October 1, 2007 to September 30, 2008) in the context of the 79-year period 1930-2008.

A broad survey of regional patterns in stream flow nationwide. Maps and graphs summarizing streamflow conditions for water-year 2009 (October 1, 2008 to September 30, 2000) in the context of the 80-year period 1930-2009.

A broad survey of regional patterns in stream flow nationwide. Maps and graphs summarizing streamflow conditions for water-year 2010 (October 1, 2009 to September 30, 2010) in the context of the 81-year period 1930-2010.

A broad survey of regional patterns in stream flow nationwide. Maps and graphs summarizing streamflow conditions for water-year 2011 (October 1, 2010 to September 30, 2011) in the context of the 82-year period 1930-2011.

Streamflow statistics and basin characteristics for most streams in specific US states using the Streamstats program. Data for areas can be selected from interactive maps and by an automated process. Includes a tutorial.

Lead page for detailed United States surface water information with links to real-time and historic streamflow data, suspended sediment data, USGS programs and facilities, publications, techniques, and featured news releases.

Explains 16 distinct types of scientific information that are needed to understand climate change, including the specific parameters measured, why they are needed, who measures them, and the type and amount of information that are not yet available.

Links for the Tides and Inflows in the Mangroves of the Everglades (TIME) project on the effects of freshwater and tidal flows on the Everglades mangroves. With links to software & manuals, time data, photos, animations, and bibliography.

Overview of project assessing water quality of the Tualatin River basin near Portland, Oregon with links to reports on chemical and nutrient levels and selected data on streamflow, water temperature, weather and precipitation.

This updated subset of USGS streamgages for which the streamflow primarily reflects prevailing meteorological conditions for specified years, screened to exclude sites where human activity affects the natural flow of the watercourse.

Program to measure streamflow stage and discharge at four sites in the Upper Wallkill River Valley's Black Dirt Region and determine Total Suspended Solids (TSS) concentration data and estimate loads of TSS and sources of contaminants.

This report presents a visual, statistical presentation of five modeled flow-management alternatives and two reference alternatives for four selected sites on the Lower Missouri to aid in decision making for flow management of the river.

U.S. map of real-time streamflow compared to historical values with links to U.S. maps and data of surface water, ground water, precipitation, river conditions and floods and other information on current and past water resources conditions.

USGS water resources home page with links to detailed hydrologic information for Maryland, Delaware, and District of Columbia on ground and surface water, water quality, real-time records, news releases, local weather, and reservoir levels.

List of current water resources projects being conducted by the U.S. Geological Survey in Maryland, Delaware, and the District of Columbia with links to dedicated websites, contacts, and project descriptions.

USGS water resources home page for Alaska with links to detailed hydrologic studies and real-time and historic data on streamflow, ground and surface water, glaciers, and water quality plus research activities, publications, and contacts.

USGS water resources home page for Arizona with detailed hydrologic studies and real-time and long-term data on streamflow, ground and surface water, water quality, and well levels plus current conditions, publications, and projects.

USGS water resources home page for Arkansas with links to detailed hydrologic studies and real-time and long-term data on streamflow, ground and surface water, water quality, water use, and rain with links to publications and research partners

USGS water resources home page for California with links to detailed hydrologic studies and real-time data on streamflow, ground and surface water, and water quality, plus links to online reports, current issues, data archives and image archive.

USGS water resources home page for Colorado with links to detailed hydrologic studies and real-time and long-term data on streamflow, snowpack, sediment, ground and surface water, and water quality, plus publications, news, and drought watch.

USGS water resources home page for Connecticut with links to detailed hydrologic studies and real-time and long-term data on streamflow, ground and surface water, water quality, streamflow conditions, gage stations, and drought.

USGS water resources home page for Florida with links to detailed hydrologic studies with real-time and long-term data on streamflow, ground and surface water, and water quality, plus publications and products, projects, news, and water watch.

USGS water resources home page for Georgia with links to detailed hydrologic studies and real-time and long-term data for streamflow, ground and surface water, water quality, and floods, plus drought watch, current projects, and connections.

USGS water resources home page for Hawaii, Micronesia, and American Samoa with links to detailed hydrologic studies and real-time and long term data on streamflow, ground and surface water, water quality, rainfall, water use and current issues.

USGS water resources home page for Idaho with links to detailed hydrologic studies and real-time and long-term data on streamflow, ground and surface water, water quality, and water use, plus drought watch and relevant publications.

USGS water resources home page for Illinois with links to detailed hydrologic studies and real-time and long-term data on streamflow, ground and surface water, droughts, flooding, and water quality with highlights and project information.

USGS water resources home page for Indiana with links to detailed hydrologic studies and real-time and long-term data for streamflow, ground and surface water, drought, and water quality plus GPS ground station data and publications.

USGS water resources home page for Iowa with links to hydrologic studies and real-time and historical data on floods, streamflow, ground and surface water, sediment, precipitation, and water quality plus news releases, publications and contacts.

USGS water resources home page for Kansas with links to detailed hydrologic studies and real-time and historical data on streamflow, ground and surface water, and water quality plus flood watch, drought watch, publications, and district news.

USGS water resources home page for Kentucky with links to detailed hydrologic studies, real-time and historical data on streamflow, ground and surface water, flow duration, and water quality plus program highlights, contacts, and news.

USGS water resources home page for Louisiana with detailed hydrologic studies and real-time and long-term data for streamflow, ground and surface water, water quality, and water supply with publications, contacts, and current conditions.

USGS water home page for Maine with detailed hydrologic studies and real-time and long-term data for streamflow, ground and surface water, snow, and water quality plus drought watch, press releases, projects, and contacts.

USGS water resource home page for Massachusetts and Rhode Island with detailed hydrologic studies and historic and real-time data on streamflow, ground and surface water, basins, floods, droughts, and water quality, plus district news.

USGS water resources home page for Michigan with links to detailed hydrologic studies and historic and real-time data on streamflow, ground and surface water, weather, water management, droughts, floods, and water quality.

Links to descriptions, maps, photos, and reports of projects related to studies of the effects of dams and flow regulation in watersheds altered by humans in the state of Michigan including Muskegon and Kalamazoo Rivers and the Seney refuge.

USGS water resource home page for Minnesota with links to detailed hydrologic studies and historic and real-time data for streamflow, ground and surface water, floods, and water quality plus district information.

USGS water resources home page for Mississippi with links to detailed hydrologic studies and real-time and long-term data for streamflow, ground and surface water, precipitation, local weather, and flooding plus current events, projects and reports.

USGS water resources home page for Montana with links to detailed hydrologic studies and historic and real-time data on streamflow, ground and surface water, floods, and water quality plus publications and district information.

USGS water resources home page for Nebraska with links to hydrologic studies and historic and real-time data on streamflow, ground and surface water, and water quality plus publications and related natural resources information.

USGS water resources home page for Nevada with links to detailed hydrologic studies and long-term and real-time data on streamflow, ground and surface water, droughts, and water quality plus district and publications information.

USGS water resources home page for New Hampshire and Vermont with links to hydrologic studies and historic and real-time data on streamflow, ground and surface water, water use, and water quality plus publications and district information.

USGS water resources home page for New Jersey with links to hydrologic studies and historic and real-time data on streamflow, ground and surface water, droughts, weather, and water quality plus district information.

USGS water resources home page for New York with links to current news and features, real-time and long-term data on acid rain, suspended sediment, ground and surface water, streamflow and water quality.

USGS water resources home page for North Carolina with links to hydrologic studies and long-term and real-time data on streamflow, ground and surface water, floods, droughts, precipitation, and water quality plus district information.

USGS water resources home page for North Dakota with links to hydrologic studies and long-term and real-time data on streamflow, ground and surface water, droughts, and water quality plus district and publications information.

USGS water resources home page for Ohio with links to hydrologic studies and long-term and real-time data on streamflow, ground and surface water, weather, water use, and water quality, plus district and publications information.

USGS water resources home page for Oklahoma with links to hydrologic studies and long-term and real-time data on streamflow, ground and surface water, climatology, droughts, and water quality plus district and publications information.

USGS water resources home page for Oregon with links to hydrologic studies and historic and real-time data on streamflow, ground and surface water, geographic information, and water quality plus district and publications information

USGS water resources home page for Pennsylvania with links to hydrologic studies and historic and real-time data on streamflow, ground and surface water, map/GIS information, and water quality plus district and publications information

USGS water resources home page for South Carolina with links to detailed hydrologic studies and real-time data on streamflow, ground and surface water, GIS information, acid rain, and water quality plus district and publications information.

USGS water resources home page for South Dakota with links to detailed hydrologic studies and historic and real-time data on streamflow, ground and surface water, and water quality plus district and publications information.

USGS water resources home page for Tennessee with links to detailed hydrologic studies and long-term and real-time data on streamflow, ground and surface water, and water quality plus district and publications information.

USGS water resources home page for Texas with links to historic and real-time data on streamflow, ground and surface water, floods, droughts, coastal storm surge, lakes and reservoirs, and water quality plus district and publications information.

USGS water resources home page for Utah with links to detailed hydrologic studies and long-term and real-time data on streamflow, ground and surface water, and water quality plus district and publications information.

USGS water resources home page for Virginia with links to detailed hydrologic studies and historic and real-time data on streamflow, ground and surface water, flooding, and water quality plus district and publications information.

Overview of a project to evaluate existing methods used by Virginia Dept. of Transportation to estimate flood hydrographs from small drainage basins, and evaluate the use of dimensionless hydrographs to estimate runoff volumes.

USGS water resources home page for Washington State with links to detailed hydrologic studies and real-time data on streamflow, ground and surface water, water use, and water quality, plus GIS data, district and publications information.

USGS water resources home page for West Virginia with links to detailed hydrologic studies and historic and real-time data on streamflow, ground and surface water, water use, and water quality, plus district information and press releases.

USGS water resources home page for Wisconsin with links to detailed hydrologic studies and historic and real-time data on streamflow, ground and surface water, water use, and water quality, plus district and publications information.

USGS water resources home page for Wyoming with links to detailed hydrologic studies and long-term and real-time data on streamflow, ground and surface water, droughts, and water quality plus district and publications information.

USGS home page for the Caribbean, U.S. Virgin Islands, and Puerto Rico with links to projects, GIS data, publications, and real-time data for streamflow and rainfall of Puerto Rico, U.S. Virgin Islands, El Salvador, Guatemala, and Honduras.

Access to national water resources real-time data typically recorded at 15-60 minute intervals, stored onsite, and then transmitted to USGS offices every 4 hours. Select for site information, ground water, surface water, and water quality.

Stream discharge and nitrate concentration increased downstream of the burned area during snowmelt, but these were probably within the treatment capacity of most drinking-water plants, and limited changes were observed in downstream ecosystems.